YZTDE(PC)(IPW24) Multispeed three-phase asynchronous motorfor tower crane

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Overview

YZTDE series motor is a mufti-speed three-phase asynchronous motor with special brakes attached to its tail, which is exclusively designed for the tower crane and other similar lifting
mechanisms (with national utility model paten)


Features


Big speed regulation ration, ideal ultimate ratio, high efficiency and big lifting torque;
Small starting current, simple and convenient control with high reliability
Athermal protection component is buried into the winding, which can be wired to motor temperature control& protection system, so the motor operation is more secure and reliable;
'the brake (fitted with special manual release device) is a de-energized brake type (with national utility model patent, Patient Iho. GL201120188124.9. LL201120188123.4)一it has big
braking torque and short response time. Due to very small mechanical noise during switching, it enables quick braking and accurate positioning
Made of a novel structure at the shaft end, it has good seal effect and long service life up to 3000h;
Compact structure, small volume and lightweight


User's Options


The user may select the motor with or without speed sensor where necessary. This is confirmed by the user when signing the contract


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Q:What are the stator and rotor functions of an alternating current motor?
If it is a three-phase AC motor, the stator generates a rotating magnetic field to drive the rotor. If it is a single-phase AC motor, the stator generates an alternating magnetic field with a magnetic field phase difference of 90 degrees to drive the rotor. The action of the rotor is that, in the case of an asynchronous motor, it produces an electric current in the stator rotating magnetic field. According to the principle of the right-hand rule, it will operate in the direction of the rotating magnetic field at a speed less than the rotation of the rotating magnetic field. And the mechanical energy generated is transmitted to the dragging device.
Q:What is the difference between the excitation winding and armature winding of AC motor?
The field winding is winding excitation magnetic field and armature winding is winding AC output power, DC excitation for synchronous generator, the rotor winding is winding of generator stator winding and armature winding is the generator.
Q:What are DC and AC servo motors? What are the characteristics?
Into a DC servo motor brush and brushless motor, brushless motor has the advantages of simple structure, low cost, high starting torque, wide speed range, easy control, maintenance, maintenance is convenient but (for brush), will produce electromagnetic interference, the environment requirements. Therefore, it can be used for cost sensitive ordinary industrial and civil occasions. Brushless motors are small in size, light in weight, large in output, fast in response, high in speed, low in inertia, smooth in rotation and stable in torque. It is easy to realize intelligent, and its commutation mode is flexible. It can be changed by square wave commutation or sine wave commutation. The utility model has the advantages of no maintenance, no carbon brush loss, high efficiency, low running temperature, small noise, small electromagnetic radiation, long service life and various environments.
Q:Brushless AC motor
1, direct current motor with DC, AC motor with alternating current;2, the DC motor needs a reversing device, which is divided into brush and brush. The brush DC motor is changed by commutator, and the brushless motor is reversed by circuit logic;3, AC motor is divided into three-phase AC motor (divided into: synchronous and asynchronous), single-phase AC motor.4, the difference between AC asynchronous motors and synchronous motors is that the rotor of induction motors is non-magnetic (usually copper and aluminum), and the rotor of synchronous machines is permanent (or rather Yu Yongci).5, the difference between single-phase AC motor and DC motor: single-phase DC motor stator or rotor is a permanent magnet (or the equivalent of a permanent magnet, namely: the fixed polarity does not change), and the rotor single-phase AC motor is non magnet, also does not need to be electrified (usually cage). If the single-phase AC electric current is applied to the brushless DC motor, the motor can be operated without the power supply reversing logic circuit.
Q:AC or DC motors for rolling gate motors?
The volume gate motor is related to the size of the AC or DC motor and the gate body.Relatively large door, the door material used is relatively heavy, generally use AC motor, torque is relatively enough.
Q:What's the difference between a three-phase AC motor and a DC motor?
AC motor shell usually made from cast iron, only as a function of protecting and supporting the motor; and DC motor shell is made of steel or steel, except for the protection and support of motor, or part of the magnetic circuit;
Q:How does the PLC control the speed of the motor?
How does the PLC control the speed of the motor?:There are a variety of ways, can be used in position control mode, PLC send a certain frequency pulse to the servo drive, a set of electronic gear ratio, the motor will run at a certain speed, change the speed of the motor only need to change the frequency of the pulse on the line, can also use the speed control mode, with a 0 PLC output to the positive and negative 10 volt analog voltage to the servo driver, set a speed command gain parameter, can control the motor rotation, the motor speed is proportional to the value of analog voltage.
Q:What is AC motor?
The torque of the single-phase motor is pulsating, and the noise is relatively large, but the required power supply is relatively simple, especially in the family. Therefore, small household motor and instrument motors are mostly single-phase motors.
Q:Brushless DC motor is AC motor or DC motor, why?
The DC motor only has no brush and commutator. It should be inside to check the rotor position through the Holzer sensor, make the drive circuit turn over, and make sure the motor turn in one direction
Q:AC motor: use gear variable or frequency conversion?
Frequency converter selection:When choosing the frequency converter, we should make sure the following points:1) adopt the purpose of frequency conversion, constant voltage control or constant current control, etc..2) the load type of frequency converter, such as vane pump or displacement pump, etc. pay particular attention to the performance curve of the load, and the performance curve determines the mode and method of application.3) matching of frequency converter and load;I. voltage matching; the rated voltage of the converter is in line with the rated voltage of the load.II. current matching; the ordinary centrifugal pump, the rated current of the converter is in line with the rated current of the motor. For special loads, such as deep water pumps, it is necessary to refer to the motor performance parameters and determine the current and overload capacity of the inverter with maximum current.III. torque matching; this may occur when a constant torque load or a deceleration device is applied.4) when the high speed motor is driven by a transducer, the higher the higher harmonic is, the higher the output current value is due to the small reactance of the high speed motor. Therefore, the type selection of frequency converter used in high speed motor is slightly larger than the selection of ordinary motor.5) if you want a long cable converter operation, this time to take measures to curb the influence of long cable on the coupling capacitor, to avoid the shortage of inverter output, so in this case, the frequency converter to enlarge the capacity of a file or install the output reactor in the inverter output.6) for some special applications, such as high temperature, high altitude, at this time will cause the inverter to reduce capacity, frequency converter capacity to enlarge a block.

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